<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input v-model="queryInfo.query" placeholder="请输入内容"
                    clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search"
                       @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column label="#" type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!-- 作用域插槽 -->
          <template slot-scope="scope"><!-- scope.row 为当前这一行的数据 -->
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary" size="mini" icon="el-icon-edit"
                       @click="showEditDialog(scope.row)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" size="mini" icon="el-icon-delete"
                       @click="removeUserById(scope.row.id)"></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" size="mini" icon="el-icon-setting"
                         @click="showSetRoleDialog(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
                     :current-page="queryInfo.pagenum"
                     :page-sizes="[1, 2, 5, 10]"
                     :page-size="queryInfo.pagesize"
                     layout="total, sizes, prev, pager, next, jumper"
                     :total="total">
      </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible"
               width="50%" @close="addDialogClose">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <!-- prop: 验证规则中的属性 -->
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addSubmit">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible"
               width="50%" @close="editDialogClose">
      <!-- 内容主体区域 -->
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <!-- prop: 验证规则中的属性 -->
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible"
               width="50%" @close="setRoleDialogClose">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的用角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option v-for="role in roleList" :key="role.id"
                       :label="role.roleName" :value="role.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取&nbsp;消</el-button>
        <el-button type="primary" @click="saveUserRole">确&nbsp;定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
    import {regEmail, regMobile} from '../../utils/CommonConsts'

    export default {
        data() {
            /**
             * 验证 邮箱的规则
             * @param rule 校验规则
             * @param value 待校验的值
             * @param callback 回调函数
             */
            var checkEmail = function (rule, value, callback) {
                if (regEmail.test(value)) {
                    // 合法的邮箱
                    return callback()
                }
                callback(new Error('请输入合法的邮箱'))
            }
            // 验证 邮箱的规则
            var checkMobile = (rule, value, callback) => {
                if (regMobile.test(value)) {
                    // 合法的邮箱
                    return callback()
                }
                callback(new Error('请输入合法的手机号'))
            }
            return {
                // 获取用户列表的参数对象
                queryInfo: {
                    query: '',
                    // 当前页码
                    pagenum: 1,
                    // 当前每页显示多少条数据
                    pagesize: 2
                },
                userList: [],
                total: 0,
                // 控制 添加用户 对话框的显示与隐藏
                addDialogVisible: false,
                // 添加用户 的表单数据
                addForm: {
                    username: '',
                    password: '',
                    email: '',
                    mobile: ''
                },
                // 添加用户表单 的验证规则对象
                addFormRules: {
                    username: [
                        /* trigger: 触发验证的时机，blur 是在失去焦点的时候验证 */
                        {required: true, message: '请输入用户名', trigger: 'blur'},
                        {min: 3, max: 10, message: '长度在3~10个字符之间', trigger: 'blur'}
                    ],
                    password: [
                        /* trigger: 触发验证的时机，blur 是在失去焦点的时候验证 */
                        {required: true, message: '请输入密码', trigger: 'blur'},
                        {min: 6, max: 15, message: '长度在6~15个字符之间', trigger: 'blur'}
                    ],
                    email: [
                        {required: true, message: '请输入邮箱', trigger: 'blur'},
                        {validator: checkEmail, trigger: 'blur'}
                    ],
                    mobile: [
                        {required: true, message: '请输入手机号', trigger: 'blur'},
                        {validator: checkMobile, trigger: 'blur'}
                    ]
                },
                // 控制 修改用户 对话框的显示与隐藏
                editDialogVisible: false,
                // 查询到的用户信息对象
                editForm: {},
                // 修改表单的验证规则
                editFormRules: {
                    email: [
                        {required: true, message: '请输入邮箱', trigger: 'blur'},
                        {validator: checkEmail, trigger: 'blur'}
                    ],
                    mobile: [
                        {required: true, message: '请输入手机号', trigger: 'blur'},
                        {validator: checkMobile, trigger: 'blur'}
                    ]
                },
                // 控制分配角色对话框的显示与隐藏
                setRoleDialogVisible: false,
                // 需要被分配角色的用户信息
                userInfo: {},
                // 所有角色的数据列表
                roleList: [],
                // 已选中的角色id值
                selectedRoleId: ''

            }
        },
        created() {
            this.getUserList()
        },
        methods: {
            async getUserList() {
                // console.log('this.queryInfo--', this.queryInfo)
                const {data: result} = await this.$http.get('users', {params: this.queryInfo})
                console.log('getUserList--:', result)
                if (result.meta.status !== 200) {
                    return this.$message.error(result.meta.msg)
                }
                this.userList = result.data.users
                this.total = result.data.total
            },
            // 监听 pagesize 改变的事件
            handleSizeChange(newPageSize) {
                // console.log('handleSizeChange---:', newPageSize)
                this.queryInfo.pagesize = newPageSize
                this.getUserList()
            },
            // 监听 页码值 改变的事件
            handleCurrentChange(newPageNum) {
                // console.log('handleCurrentChange---:', newPageNum)
                this.queryInfo.pagenum = newPageNum
                this.getUserList()
            },
            /**
             * 监听 switch 开关状态的改变
             * @param row 一条user记录
             */
            async userStateChanged(row) {
                console.log('userStateChanged---:', row)
                const {data: result} = await this.$http.put(`users/${row.id}/state/${row.mg_state}`)
                if (result.meta.status !== 200) {
                    row.mg_state = !row.mg_state
                    return this.$message.error('更新用户状态失败')/* result.meta.msg */
                }
                this.$message.success('更新用户状态成功')/* result.meta.msg */
            },
            // 添加用户 的对话框关闭
            addDialogClose() {
                this.$refs.addFormRef.resetFields() // 另一种方式 this.$refs['addFormRef'].resetFields()
                // console.log("addDialogClose")
                // this.addDialogVisible = false
            },
            // 点击按钮，添加新用户
            addSubmit() {
                this.$refs.addFormRef.validate(async (valid) => {
                    console.log('valid---:', valid)
                    if (!valid) {
                        return /*false*/
                    }
                    // 发起添加用户的网络请求
                    const {data: result} = await this.$http.post('users', this.addForm)
                    if (result.meta.status !== 201) {
                        return this.$message.error(result.meta.msg)/* result.meta.msg */
                    }
                    this.$message.success('添加用户成功')/* result.meta.msg */
                    // 隐藏添加用户的对话框
                    this.addDialogVisible = false
                    // 重新获取用户列表数据
                    this.getUserList()
                })
            },
            // 展示编辑用户的对话框
            async showEditDialog(row) {
                // console.log('showEditDialog',row.id)
                const {data: result} = await this.$http(`users/${row.id}`)
                if (result.meta.status !== 200) {
                    return this.$message.error(result.meta.msg)
                }
                this.editForm = result.data
                this.editDialogVisible = true
            },
            // 监听修改用户对话框的关闭事件
            editDialogClose() {
                this.$refs.editFormRef.resetFields()
            },
            // 修改用户信息并提交
            editUserInfo() {
                this.$refs.editFormRef.validate(async (valid) => {
                    console.log('valid---:', valid)
                    if (!valid) {
                        return /*false*/
                    }
                    // 发起修改用户信息的数据请求
                    const {data: result} = await this.$http.put('users/' + this.editForm.id,
                        {email: this.editForm.email, mobile: this.editForm.mobile})
                    console.log('this.editForm.id----', this.editForm.id)
                    console.log('result----', result)
                    if (result.meta.status !== 200) {
                        return this.$message.error(result.meta.msg)/* result.meta.msg */
                    }
                    // 关闭对话框
                    this.editDialogVisible = false
                    // 刷新数据列表
                    this.getUserList()
                    // 提示修改成功
                    this.$message.success('更新用户信息成功')/* result.meta.msg */
                })
            },
            // 根据id删除对应的的用户信息
            async removeUserById(id) {
                // console.log('id--:', id)
                // 弹框询问用户是否删除数据
                const confirmResult = await this.$confirm(
                    '此操作将永久删除该用户, 是否继续?',
                    '提示',
                    {
                        confirmButtonText: '确定',
                        cancelButtonText: '取消',
                        type: 'warning'
                    }).catch(error => error)

                // 如果用户确认删除，则返回值为字符串 confirm
                // 如果用户取消了删除，则返回值为字符串 cancel
                console.log('confirmResult--:', confirmResult)
                if (confirmResult !== 'confirm') {
                    return this.$message.info('已取消删除')
                }
                const {data: result} = await this.$http.delete('users/' + id)
                if (result.meta.status !== 200) {
                    return this.$message.error(result.meta.msg)/* result.meta.msg */
                }
                this.$message.success('删除用户成功')
                this.getUserList()
            },
            // 展示分配角色的对话框
            async showSetRoleDialog(userInfo) {
                this.userInfo = userInfo
                // 在展示对话框之前，获取所有角色的列表
                const {data: result} = await this.$http.get('roles')
                if (result.meta.status !== 200) {
                    return this.$message.error(result.meta.msg || '获取角色列表失败')
                }
                this.roleList = result.data
                this.setRoleDialogVisible = true
            },
            // 点击按钮，分配角色
            async saveUserRole() {
                if (!this.selectedRoleId) { // 没有选择角色
                    return this.$message.error('请选择要分配的角色')
                }

                const {data: result} = await this.$http.put(`users/${this.userInfo.id}/role`, {rid: this.selectedRoleId})
                if (result.meta.status !== 200) {
                    return this.$message.error(result.meta.msg || '更新用户角色失败')
                }
                this.$message.success(result.meta.msg || '更新用户角色成功')
                // 更新用户角色成功
                this.getUserList()
                this.setRoleDialogVisible = false
            },
            // 监听分配角色对话框的关闭事件
            setRoleDialogClose() {
                this.selectedRoleId = ''
                this.userInfo = {}
            }
        }
    }
</script>

<style lang="less" scoped>

</style>
